Equations · equation
Kepler's Second Law
Celestial Mechanics · 1609
- Equation
- dA/dt = L/2m = constant
- Field
- Celestial Mechanics
- Named After
- Johannes Kepler
- Symbols
- A area swept by the Sun–planet line · t time · L orbital angular momentum · m planet mass
- Year
- 1609
Significance
The line to the Sun sweeps equal areas in equal times: planets hurry through closest approach and dawdle far away. Conservation of angular momentum, decades before the concept had a name.
Referenced by
equation
theory
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